A compressible LES code has been developed to simulate turbulent channel flows. A skew-symmetric 4th-order central scheme and the diagonalized ADI scheme with the dual-time stepping were applied to obtain stable and accurate solutions. M=0.5 compressible channel problem was used to verify the developed code and to validate the solution. Effects of time step size and grid resolution were investigated. The present parametric study show that the present LES code can provide accurate and stable solutions for compressible channel flows.